Window screen



Patented Jan. 8, 1924.

UNITED STATES J'UDSO'N M. GRANIER, 0F GARDNER, KANSAS.

WINDOW SCREEN.

Application led February 6, 1922. Serial No. 534,383.

To all whom t may concern.'

Be it known that I, JUDsoN M. CRAMER, a citizen of the United States, and resident of Gardner, county of Johnson, State of Kansas, have invented a certain new and useful Improvement in Window Screens, of which the following is a complete specification.

This invention relates to window screens for protection against the entrance of flies and other insects when the lower sash is raised, and more especially to that class in which a half-screen is connected by retractile coil springs to the window casing, so that the springs are stretched to hold the screen in place and relaxed when supporting the screen in inoperative position.

My object is to produce a spring support of the general type mentioned, in which the ends of the springs are connected to the casing by downwardly-opening screw-hooks which serve as resistant points for the stretching of the springs when the screen is in operative position and as suspension points for the springs when the screen is shifted to inoperative position, the connection of the springs with said screw-hooks being such that it cannot be broken unless the springs are placed under suilicient torsional strain to -turn their ends engaging such hooks from a quarter to a half revolution, a result which can occur only when power is applied manually to accomplish it.

With this general object in view, the invention consists in certain novel and useful features of construction and combinations of parts as hereinafter described and claimed; and in order that it may be fully understood, reference is to be had to the accompanying drawing, in which Figure 1 is a Jfragmentary inner face view of a window equipped with a half screen embodying the invention;

Figure 2 is an enlarged vertical section of the construction shown by Figure l;

Figure 3 is an enlarged fragmentary section taken on the line III-III of Figure 2;

Figure 4 is a horizontal section taken on the line IV-IV of Figure 3;

Figure 5 is a view similar to Figure 3, but showing the screen supported in inoperative position;

Figure 6 is a top plan view of the construction and arrangement as shown by Figure 5; and

Figure 7 is a diagrammatic View illustrating the relation between one of the springs and window casing hooks preliminary to and after they are connected together.

Referring tothe drawing in detail, 1 indicates the sides, 2 'the sill, 3 the lower sash and 4t the upper sash of a window frame of any suitable or preferred type.

A half screen 5 is adapted when in operative position to rest upon the sill and against the outer' edges of the outer stop 6 of the window casing and against the inner faces of theY side portions of the latter, and the upper rail of the screenl frame is provided with an inwardly projecting guard 7 foi contactwith the outer face ofthe lower rail of the upper sash for preventing flies or other insects obtaining access to the inside of the screen.

For the supportl of the screen it is provided near the upper ends of its side rails with screw eyes 8 and attached at their upper ends to said screw eyes are retractile springs 9 terminating at theirv lower ends'in loops 10 for engagement with downwardly-opening hooks l1 projecting inward from the stops 6 of the window' casing.

By reference particularly to `Figures 3 and 4, which represent the parts as arranged when the screen is in operative position as in full lines Figure 2, it will be apparent that the loops 10 at'the lower ends of the sprin s extend convergingly outward, and by re erence to Figures' and 6, which show the screen in inoperative position, that is suspended as indicated by dotted lines in Figure 2, with the said loops 10` disposed in the reverse direction, that is divergingly outward, this change of position indicated by reference to Figures a and 6 most clearly, being due to the fact that in the former figure the spring extends `upwardly and in the latter figure downwardly from its point of connection with the hook 11. In this connection, it will be noted'that each of the loops 10 turns pivotally on and remains in connection with the upper part of the respective hook eye when shifted from one of said positions to the other or vice versa and has no tendency to slide downward toward the opening of the hook. Because of this fact,

it will be obvious that when the lower sash v is raised and the operator pushes outward against the lower part of the screen when in operative position to dislodge it from its support upon the sill, it drops down to the position shown by dotted lines withoutr any tendency whatever on the part of the loops 10 to become disengaged from the Clownwardly-opening hooks 11.

To establish the relation between the loops l0 and the downwardly-opening hook eyes 11 above explained, it is necessary for the operator to apply torsional strain on the springs and to hold them in such condition until said loops are engaged with the said hook eyes, as otherwise they will slip off of the said hook eyes under the drop of the screen when dislodged from operative position, as above explained. To apply this torsional strain, the operator after setting the screen in position, grasps the inner ends of the springs and with the parts arranged and proportioned as shown by Figure 7, twists or turns the loops from about the position shown by full lines a and b, to the position shown by the adjacent dotted lines a and b, and while holding the spring thus tensioned raise the said ends to lit the said loops onto the said hook eyes, this operation taking place, of course, before the screen is disposed in operative position, or in other words when it is disposed substantially as shown by dotted lines, Figure 2. Immediately after the loops are thus slipped onto the said hooks, the springs are released, and in attempting to return to normal condition, bind upon the hooks, the point al tending to move downward and inward and the point b, upward and outward. Upward pressure is now applied on the screen frame to raise it to operative position, and the loop ends oi the springs slide upwardly and inwardly on the hook eyes and assume the position shown most clearly by Figures 3 and 4 in which position they are under no torsional strain, but in which position it will be apparent torsionalv strain in the reversed direction to that mentioned will be necessary in order to permit the springs to be disengaged from the hook eyes, and to. accomplish this, application of course by manual power is absolutely necessary, as it is impossible for the springs to become accidentally disengaged from said hook eyes under upward or downward or outward adjustment of the screen.

From the above description it will be apparent that I have produced a device of the. character described, which possesses all of the features of advantage set forth as desirable, and while l have described and claimed the preferred embodiment of the same, l reserve the right to make all changes properly falling within the spirit and scope of the appended claims.

l claim:

l. The combination with a window having an upper and lower sash and downwardly opening hooks disposed within and at the sides of the casing below the plane of the upper rail ol the sash to be screened, of a screen provided with a. pair of eyes disposed in a plane abo-ve the plane et said casing hooks when the screen is in operative position and coil springs connected to said eyes and to said hooks; the springs where engaged with said hooks, having loops which converge outwardly or diverge outwardly, accordingly as the screen is in operative position or is hanging inop'eratively from said hooks.

2. The combination with a window having an upper and lower sash and downwardly opening hooks disposed within andi at the sides of the casing below the plane of the upper rail of the sash to be screened, of a screen provided with a pair of eyes, and coil springs connected to said eyes and to saidy hooks; and extending verticallyy upward in stretched condition to hold the screen in operative position, and downwardly and outwardly from said hooks to said eyes, in relaxed condition to suspend the screen in inoperative position; the springs where engaged with said hooks, having'end-loops which converge outwardly or diverge outwardly accordingly as the screen is in operative or inoperative position.

3. The combination of a window casing, downwardly opening hoo-ks disposed within and at the sides of the casing, of a screen providedy with a pair of eyes, and coil springs connecting said eyes and hooks; the said casing hoo-ks when the screen is in operative position ,occupying planes below the planes of the eyes in such a: manner that the springs shall exert force on the screen tending tol move it downwardly and thus maintain said screen in position within the casing.

In witness whereof' l hereunto affix my signature,

JUDSQN M. GRANIER. 

